Dissertation Research: Abiotic and Biotic Control of Tree Regeneration: An Experimental Comparison of Sites Around Gatun Lake, Panama

论文研究：树木再生的非生物和生物控制：巴拿马加通湖周围地点的实验比较

• 批准号: 9801320
• 负责人: John Terborgh
• 金额: $ 0.3万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-05-01 至 2000-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9801320&HistoricalAwards=false
• 关键词: Dissertation; Research; Abiotic; Biotic; Control

9801320 Terborgh and Asquith This work focuses on the question of why tropical forests support an extraordinary level of species diversity and the factors that reduce diversity following disturbance. The approach is to combine both monitoring and manipulations in forest fragments in Panama that have been isolated for over 85 years. These forest patches were created in 1912 as a byproduct of the construction of the Panama Canal. Such forest fragments have been shown to have suffered forest tree species loss. Comparison of species diversity in forest fragments with nearby intact forests will provide an indication of the extent of tree species loss during this period of time and manipulative experiments will provide evidence for mechanisms driving this loss of diversity. Specifically, rates of germination, seed predation, seedling herbivory and survivorship will be measured in forests with different mammal communities and other experiments will focus on effects of soil moisture on seedling survival. These experiments will provide insights into the mechanisms that drive loss of biodiversity in disturbed tropical forests.

9801320特堡和阿斯奎斯 这项工作的重点是为什么热带森林支持一个非凡的物种多样性水平的问题，以及减少干扰后的多样性的因素。 所采取的办法是在巴拿马孤立了85年以上的森林片断中将监测和操作联合收割机结合起来。这些森林是1912年巴拿马运河建设的副产品。这些森林片断已被证明遭受了森林树种的损失。 森林片段与附近的完整森林的物种多样性的比较将提供一个指标的树种损失的程度，在这段时间内和操纵实验将提供证据的机制驱动这种多样性的损失。具体而言，发芽率，种子捕食，幼苗草食性和生存率将在森林中测量不同的哺乳动物群落和其他实验将集中在土壤水分对幼苗生存的影响。 这些实验将为受干扰的热带森林中生物多样性丧失的机制提供见解。